sheer



(No Model.) 2 Sheets-Sheet 1. H M. SHEER. INUUBATOR.

Patented Dec. 27, 1892'.

TATES P TENT OFFICE.

HENRY M. SHEER, OF QUINCY, ILLINOIS, ASSIGNOR TO CHARLES M. ERTEL, OF SAME PLACE.

INCUBATOR.

SPECIFICATION forming part of Letters Patent No. 488,953, dated December 27, 1892.

Application filed September 8, 1892. Serial No. 445,354. (No model.)

To wZZ whom it may concern: the far end of the tank from the boiler, as

Be it known that I, HENRY M. SHEER, of shown at A, Fig. III. Quincy, in the county of Adams and State of 14 represents a water duct extending from Illinois,have invented a certain new and usethe water tank to the lower part of the boiler, 5 5 ful Improvement in Incubators, of which the as shown in Fig. V. This duct is preferably followingis afull, clear, and exact description, located directly beneath the water pipe 13, as reference being had to the accompanying shown in Fig. VI, thustaking the water from drawings, forming part of this specification. the center of the tank at the end nearest the My present invention relates tocertain imboiler. 6O provements designed to facilitate the uniform represents deflectors located within the heating of the egg chamber of an incubator, water tank and projecting outwardly from the with as little expenditure of fueloroil as possiwater pipe 13 to near the sides of the tank, as ble, and to facilitate the thorough ventilation shown in Fig. III. of the egg chamber. The operation of this part of my invention 65 I 5 My present invention consistsin features of is as followsz-The boiler and tank are filled novelty hereinafter fullydescribed and point with water. The lamp is then lighted, and ed out in the claims. the heat from it passing through the chamber Figure I is an end View, illustrative of my 9 of the boiler and through the fine 12, which improved incubator. Fig. II is a vertical, traverses the water tank, (see halt feathered 7o transverse section, taken on line II-II, Fig. arrows Fig. V), heats the water and causes it III. Fig. III is a plan or top view, with parts to circulate, as indicated by the full arrows, broken away. Fig. IV-is part in side view through the pipe 13, through the water tank, and part in section, on line IV-IV, Fig. III. around the deflectors 15 and back through the Fig. V is an enlarged, detail, vertical section, duct 14, into the lower part or bottom of the 7 5 taken on line V-V, Fig. III. Fig. VI is a boiler, and a continuous circulation is maindetail section, taken on line VIVI, Fig. V. tained as long as the lamp burns, the water Fig. VII is an enlarged, detail view of the air being delivered into and removed from the regulator. central portion of the tank.

Referring to the drawings, 1 represents the For the purpose of regulating the heat, I em- 30 body of the incubator which is supported on ploy a thermostat 17, such as is shown and desuitable legs 2. In the body are a water tank scribed in my application filed January 30, 3, and an egg chamber 4, in which are sup- 1892, Serial No. 419,787. To this thermostat ported suitable trays 5 for holding the eggs is secured a disk 19, which is located over the and beneath which moistening pansfi may be open, upper end of the chamber 9 of the located; the bottom,sides and ends of the body boiler 8. The thermostat moves this disk to are provided with dead air chambers 7. or from the mouth of the chamber 9, as the I will first describe the part of my inventemperature of the incubator varies, thus tion which relates to the manner of heating maintaining a uniform heat in the egg chamthe water in the tank 3. her by allowing the heat from thelam p to pass o 8 represents a boiler adapted to contain 01f directly through the open, upper end of water, and which has a central opening or the boiler chamber 9 or by causing it to pass chamber 9 (see Fig. V) for receiving the chimthrough the flue 12, and thus the temperature ney and burner of a lamp 105 the chamber 9 is regulated without any adjustment of the is open at bottom and top and surrounding wick or burner cone of the lamp. 5 it is the water jacket 11 of the boiler. The other part of my invention relates to 12 represents a hot air flue leading from the the means for ventilating the egg chamber. chamber 9 through the body of the incuba- This is done by forming openings 20 in the tor, and centrally through the water tank 3. ends of the outer walls of the body of the in- Surrounding this air flue is a water pipe or cubator inside of the dead air chambers 7, (see too jacket 13, which extends from the upper end Fig. IV.) These openings communicate at of the boiler 8 through the water tank to near 21 with the egg chamber and at 22 with the Water tank chamber, which latter chamber is provided with a central flue 23, controlled by a disk 24 secured to one end of a lever 25, which is fulcrumed or pivoted at 26 (see Figs. II and VII) and the other end of which is connected at 27 to the lever 18 of the thermostat, and thus as the thermostat regulates theheat of the lamp, it also regulates the circulation of air. In case, by any accident, the heatin the egg chamber of the incubator should become excessive, the thermostat opens the damper 19 of the boiler, and at the same time opens the damper 24 of the Ventilating fiue, thus causing a rapidrestorationof. the "normal temperature in the egg chamber. The air enters the egg chamber through any suitable passage, as, for instance, throughopenings 29, see Fig. IV.

I claim as my invention:

1. In an incubator, the combination of a boiler, a water tank, a hot air fine leading from the upper part of the boiler through the water tank,a water pipe surrounding'the hot air fine and extending from the boiler through the water tank, to near its end farthest from the boiler, and a return duct extendingf-rom the end of the water .tank nearest the boiler to the lower part of the boiler; substantially as and for the purpose set forth.

2. In an incubator, the combination-of a boiler, a Water tank, a hothair' flue leading from the boiler centrally through, the Water tank, a water pipe leading from the upper part of the boiler to near the far end 'of the said hot air flue, deflectors located in said tank tank from the boiler, and which surrounds ;carries 'thewater from the tank back to the bottom of the boiler; substantially as and for the purpose setforth.

4. In an incubator, the combination of a water tank, a boiler having, a central air 'chamber,a hotairflue leading from said chamberthrough said Watertank, a water pipe surrounding said hot air flue, and extending from the boiler to near. the far end ofsaid tank, a return duct leading from the tank .to the bottom of the boiler, and a thermostat controlling the open, upper end of said boiler cham ber, whereby the heat from, the boiler lamp is allowed to escapedirectly from said chamber or is caused to pass through saidhot air pipe; substantially as and for the-purpose set forth.

I-IENRY M. SHEER. In presence of- RICHARD JANSEN, GEO. S. WEISENBURGER. 

